[Ips-dhfpr] IPS Daily HF Prop Report - 28 May 11

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 28/2330Z MAY 2011 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (28 MAY) 
Date   T index  Conditions    
28 May    51    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M1.1    2151UT  possible   lower  East Pacific/
                                    North American

MUFs:
   Cocos Island Region:
      No data available during local day,
      No data available during local night.
   Niue Island Region:
      Depressed by 15% during local day,
      Near predicted monthly values during local night.
   Northern Australian Region:
      Depressed by 15% during local day,
      Enhanced by 20% during local night.
      Enhanced by 25% after local dawn.
   Southern Australian and New Zealand Region:
      Depressed by 15% during local day,
      Enhanced by 20% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 30% over the UT day.

PCA Event : No event.

Predicted Monthly T index for May:  49
2. FORECAST (29 MAY - 31 MAY)
Date   T index  Conditions       MUFs                              
29 May    40    Normal-fair      near predicted monthly values/depressed 
                                 10 to 20% 
30 May    50    Normal           near predicted monthly values     
31 May    50    Normal           near predicted monthly values    
COMMENT: Variable HF conditions observed over the last 24 hours. 
Depressed MUFs of approx 15% observed during local day for Equatorial 
and Northern AUS as well as Souther AUS/NZ regions. Enhanced 
MUFs for Northern AUS and Southern AUS/NZ regions during local 
night. Disturbed conditions for Antarctic regions. Similar conditions 
are expected for the next 24 hours - depressed periods for high 
to mid latitudes due to increased geomagentic actvitiy. For 30May-31May 
mostly normal ionospheric support expected as geomagnetic effects 
decline and solar activity increases. 
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For an explanation of some of the terms in this report, go to
http://www.ips.gov.au, and follow links to Educational->
Glossary on Solar Terrestrial Terms.

IPS Radio and Space Services        email: asfc at ips.gov.au
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Haymarket NSW 1240  AUSTRALIA       FTP: ftp://ftp.ips.gov.au 
tel: +61 2 9213 8010                fax: +61 2 9213 8060 

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